Granted Patent
Utility
US 5,101,657 · App. 07/519,975
Sensors for detecting and locating fluids
Inventors:
John Lahlouh, Ray F. Stewart, Robert Wasley, Paul D. Hauptly, Laurence Welsh
Patented Case
View Patent ↗
Granted: Apr 7, 1992
Filed: May 7, 1990
Inventors
John Lahlouh
Ray F. Stewart
Robert Wasley
Paul D. Hauptly
Laurence Welsh
Assignee (at issue)
Raychem Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.